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  2. Conservation and restoration of glass objects - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    For glass objects that are not window glass, the most common way of cleaning is by water if the glass object is intact and not super fragile. The Victoria and Albert Museum provides guidance about how to go about this way of cleaning. [4] The methods of cleaning may differ if the glass is already damaged, extremely thin or fragile, or very old.

  3. Hardpan - Wikipedia

    en.wikipedia.org/wiki/Hardpan

    In soil science, agriculture and gardening, hardpan or soil pan is a dense layer of soil, usually found below the uppermost topsoil layer. [1] There are different types of hardpan, all sharing the general characteristic of being a distinct soil layer that is largely impervious to water. Some hardpans are formed by deposits in the soil that fuse ...

  4. Cookware and bakeware - Wikipedia

    en.wikipedia.org/wiki/Cookware_and_bakeware

    Glass ceramic is used to make products such as Corningware and Pyroflam, which have many of the best properties of both glass and ceramic cookware. While Pyrex can shatter if taken between extremes of temperature too rapidly, glass-ceramics can be taken directly from deep freeze to the stove top.

  5. Kitchen utensil - Wikipedia

    en.wikipedia.org/wiki/Kitchen_utensil

    Kitchen utensils in bronze discovered in Pompeii. Illustration by Hercule Catenacci in 1864. Benjamin Thompson noted at the start of the 19th century that kitchen utensils were commonly made of copper, with various efforts made to prevent the copper from reacting with food (particularly its acidic contents) at the temperatures used for cooking, including tinning, enamelling, and varnishing.

  6. Tempered glass - Wikipedia

    en.wikipedia.org/wiki/Tempered_glass

    Tempered glass can be made from annealed glass via a thermal tempering process. The glass is placed onto a roller table, taking it through a furnace that heats it well above its transition temperature of 564 °C (1,047 °F) to around 620 °C (1,148 °F). The glass is then rapidly cooled with forced air drafts while the inner portion remains ...

  7. Pontil mark - Wikipedia

    en.wikipedia.org/wiki/Pontil_mark

    Pontil scar on the base of a free-blown glass bowl. A pontil mark or punt mark is the scar where the pontil, punty or punt was broken from a work of blown glass.The presence of such a scar indicates that a glass bottle or bowl was blown freehand, while the absence of a punt mark suggests either that the mark has been obliterated or that the work was mold-blown.

  8. Conservation and restoration of photographic plates - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    Broken or cracked glass plates are stored specially, separate from other photographic plates, and in the following ways: Broken glass plates are stored flat, unlike intact plates stored vertically. Stacking broken plates only five plates high is recommended due to the plates' weight. This will prevent further breakage and damage. [29]

  9. Cast-iron cookware - Wikipedia

    en.wikipedia.org/wiki/Cast-iron_cookware

    The amounts of iron absorbed varied greatly depending on the food, its acidity, its water content, how long it was cooked, and how old the cookware is. The iron in spaghetti sauce increased 845 percent (from 0.61 mg/100 g to 5.77 mg/100 g), while for other foods it increased less dramatically; for example, the iron in cornbread increased 28 ...